On 10/28/2009 7:23 PM, Peter Macko wrote:
DNS that is used by postfix stopped working and consequently caused
postfix respond to:
1. senders from outside: NOQUEUE: reject: RCPT from
unknown[194.168.1.66]: 450 4.1.8
2. senders from inside (LAN): NOQUEUE: reject: RCPT from
unknown[172.16.125.115]: 450 4.1.2
1. case looks Ok, mailservers from outside keep trying to deliver the
rejected messages.
2. case is not that good. Email clients on LAN e.g. outlook generate
failed delivery message 450 4.1.2.
The problem is that I use AVG antivirus to check emails and it will not
generate any message in this case.
In case of DNS failure, can I configure postfix to construct standard
message (failed delivery) for senders from LAN (local users of postfix
server) and
for senders from outside (other email servers) to keep responding 450 4.1.8?
Yes, don't subject internal or authenticated users to
reject_unknown_client_hostname checks.
Make sure the permit_mynetworks and/or
permit_sasl_authenticated is listed first.
If you need more help, refer to the list welcome message you
received when you signed up, or see
http://www.postfix.org/DEBUG_README.html#mail
-- Noel Jones
